C#重载加减乘除

你问的不就是MSDN上运算符重载的例子么
翻翻MSDN，现成的

using System;
namespace ConsoleApplication1
{
class Program
{
delegate double PD(double p1, double p2);
static double Multiply(double p1, double p2)
{
return p1 * p2;
}
static double Divide(double p1, double p2)
{
return p1 / p2;
}
static double Plus(double p1,double p2)
{
return p1+p2;
}
static double Minus(double p1, double p2)
{
return p1 - p2;
}
static void Main(string[] args)
{
PD pro;
Console.WriteLine("Enter 2 numbers separated withed with args comma:");
string input = Console.ReadLine(); int commaPos = input.IndexOf(',');
double p1 = Convert.ToDouble(input.Substring(0, commaPo